Why do the rockets from this rocket launcher not work properly?

Hi, I'm a novice scripter, and the rocket launchers in my game aren't working properly. They used to, but...

Anyway, I tried making the projectile "canCollide", but then the rockets just bounced off objects.

Obviously, I used Roblox's rocket.

Here's the first script, called "Launcher" from the rocket.

local GRAVITY_ACCELERATION = 196.2

local RELOAD_TIME = 3 -- Seconds until tool can be used again
local ROCKET_SPEED = 50 -- Speed of the projectile

local MISSILE_MESH_ID = 'http://www.roblox.com/asset/?id=2251534'
local MISSILE_MESH_SCALE = Vector3.new(0.35, 0.35, 0.25)
local ROCKET_PART_SIZE = Vector3.new(1.2, 1.2, 3.27)

-----------------
--| Variables |--
-----------------

local DebrisService = Game:GetService('Debris')
local PlayersService = Game:GetService('Players')

local MyPlayer = PlayersService.LocalPlayer

local Tool = script.Parent
local ToolHandle = Tool.Handle

local RocketScript = script:WaitForChild('Rocket')
local SwooshSound = script:WaitForChild('Swoosh')
local BoomSound = script:WaitForChild('Boom')

--NOTE: We create the rocket once and then clone it when the player fires
local Rocket = Instance.new('Part') do
	-- Set up the rocket part
	Rocket.Name = 'Rocket'
	Rocket.FormFactor = Enum.FormFactor.Custom --NOTE: This must be done before changing Size
	Rocket.Size = ROCKET_PART_SIZE
	Rocket.CanCollide = true

	-- Add the mesh
	local mesh = Instance.new('SpecialMesh', Rocket)
	mesh.MeshId = MISSILE_MESH_ID
	mesh.Scale = MISSILE_MESH_SCALE

	-- Add fire
	local fire = Instance.new('Fire', Rocket)
	fire.Heat = 5
	fire.Size = 2

	-- Add a force to counteract gravity
	local bodyForce = Instance.new('BodyForce', Rocket)
	bodyForce.Name = 'Antigravity'
	bodyForce.force = Vector3.new(0, Rocket:GetMass() * GRAVITY_ACCELERATION, 0)

	-- Clone the sounds and set Boom to PlayOnRemove
	local swooshSoundClone = SwooshSound:Clone()
	swooshSoundClone.Parent = Rocket
	local boomSoundClone = BoomSound:Clone()
	boomSoundClone.PlayOnRemove = true
	boomSoundClone.Parent = Rocket

	-- Attach creator tags to the rocket early on
	local creatorTag = Instance.new('ObjectValue', Rocket)
	creatorTag.Value = MyPlayer
	creatorTag.Name = 'creator' --NOTE: Must be called 'creator' for website stats
	local iconTag = Instance.new('StringValue', creatorTag)
	iconTag.Value = Tool.TextureId
	iconTag.Name = 'icon'

	-- Finally, clone the rocket script and enable it
	local rocketScriptClone = RocketScript:Clone()
	rocketScriptClone.Parent = Rocket
	rocketScriptClone.Disabled = false
end

-----------------
--| Functions |--
-----------------

local function OnActivated()
	local myModel = MyPlayer.Character
	if Tool.Enabled and myModel and myModel:FindFirstChild('Humanoid') and myModel.Humanoid.Health > 0 then
		Tool.Enabled = false

		-- Create a clone of Rocket and set its color
		local rocketClone = Rocket:Clone()
		DebrisService:AddItem(rocketClone, 30)
		rocketClone.BrickColor = MyPlayer.TeamColor

		-- Position the rocket clone and launch!
		local spawnPosition = (ToolHandle.CFrame * CFrame.new(2, 0, 0)).p
		rocketClone.CFrame = CFrame.new(spawnPosition, myModel.Humanoid.TargetPoint) --NOTE: This must be done before assigning Parent
		rocketClone.Velocity = rocketClone.CFrame.lookVector * ROCKET_SPEED --NOTE: This should be done before assigning Parent
		rocketClone.Parent = Workspace

		wait(RELOAD_TIME)

		Tool.Enabled = true
	end
end

--------------------
--| Script Logic |--
--------------------

Tool.Activated:connect(OnActivated)

Here's the second script, called "Rocket."

local BLAST_RADIUS = 8 -- Blast radius of the explosion
local BLAST_DAMAGE = 100 -- Amount of damage done to players
local BLAST_FORCE = 1000 -- Amount of force applied to parts

local IGNORE_LIST = {rocket = 1, handle = 1, effect = 1, water = 1} -- Rocket will fly through things named these
--NOTE: Keys must be lowercase, values must evaluate to true

-----------------
--| Variables |--
-----------------

local DebrisService = Game:GetService('Debris')
local PlayersService = Game:GetService('Players')

local Rocket = script.Parent

local CreatorTag = Rocket:WaitForChild('creator')
local SwooshSound = Rocket:WaitForChild('Swoosh')

-----------------
--| Functions |--
-----------------

-- Removes any old creator tags and applies a new one to the target
local function ApplyTags(target)
	while target:FindFirstChild('creator') do
		target.creator:Destroy()
	end

	local creatorTagClone = CreatorTag:Clone()
	DebrisService:AddItem(creatorTagClone, 1.5)
	creatorTagClone.Parent = target
end

-- Returns the ancestor that contains a Humanoid, if it exists
local function FindCharacterAncestor(subject)
	if subject and subject ~= Workspace then
		local humanoid = subject:FindFirstChild('Humanoid')
		if humanoid then
			return subject, humanoid
		else
			return FindCharacterAncestor(subject.Parent)
		end
	end
	return nil
end

-- Customized explosive effect that doesn't affect teammates and only breaks joints on dead parts
local function OnExplosionHit(hitPart, hitDistance, blastCenter)
	if hitPart and hitDistance then
		local character, humanoid = FindCharacterAncestor(hitPart.Parent)

		if character then
			local myPlayer = CreatorTag.Value
			if myPlayer and not myPlayer.Neutral then -- Ignore friendlies caught in the blast
				local player = PlayersService:GetPlayerFromCharacter(character)
				if player and player ~= myPlayer and player.TeamColor == Rocket.BrickColor then
					return
				end
			end
		end

		if humanoid and humanoid.Health > 0 then -- Humanoids are tagged and damaged
			if hitPart.Name == 'Torso' then
				ApplyTags(humanoid)
				humanoid:TakeDamage(BLAST_DAMAGE)
			end
		else -- Loose parts and dead parts are blasted
			if hitPart.Name ~= 'Handle' then
				hitPart:BreakJoints()
				local blastForce = Instance.new('BodyForce', hitPart) --NOTE: We will multiply by mass so bigger parts get blasted more
				blastForce.force = (hitPart.Position - blastCenter).unit * BLAST_FORCE * hitPart:GetMass()
				DebrisService:AddItem(blastForce, 0.1)
			end
		end
	end
end

local function OnTouched(otherPart)
	if Rocket and otherPart then
		-- Fly through anything in the ignore list
		if IGNORE_LIST[string.lower(otherPart.Name)] then
			return
		end

		local myPlayer = CreatorTag.Value
		if myPlayer then
			-- Fly through the creator
			if myPlayer.Character and myPlayer.Character:IsAncestorOf(otherPart) then
				return
			end

			 -- Fly through friendlies
			if not myPlayer.Neutral then
				local character = FindCharacterAncestor(otherPart.Parent)
				local player = PlayersService:GetPlayerFromCharacter(character)
				if player and player ~= myPlayer and player.TeamColor == Rocket.BrickColor then
					return
				end
			end
		end

		-- Fly through terrain water
		if otherPart == Workspace.Terrain then
			--NOTE: If the rocket is large, then the simplifications made here will cause it to fly through terrain in some cases
			local frontOfRocket = Rocket.Position + (Rocket.CFrame.lookVector * (Rocket.Size.Z / 2))
			local cellLocation = Workspace.Terrain:WorldToCellPreferSolid(frontOfRocket)
			local cellMaterial = Workspace.Terrain:GetCell(cellLocation.X, cellLocation.Y, cellLocation.Z)
			if cellMaterial == Enum.CellMaterial.Water or cellMaterial == Enum.CellMaterial.Empty then
				return
			end
		end

		-- Create the explosion
		local explosion = Instance.new('Explosion')
		explosion.BlastPressure = 0 -- Completely safe explosion
		explosion.BlastRadius = BLAST_RADIUS
		explosion.ExplosionType = Enum.ExplosionType.NoCraters
		explosion.Position = Rocket.Position
		explosion.Parent = Workspace

		-- Connect custom logic for the explosion
		explosion.Hit:connect(function(hitPart, hitDistance) OnExplosionHit(hitPart, hitDistance, explosion.Position) end)

		-- Move this script and the creator tag (so our custom logic can execute), then destroy the rocket
		script.Parent = explosion
		CreatorTag.Parent = script
		Rocket:Destroy()
	end
end

--------------------
--| Script Logic |--
--------------------

SwooshSound:Play()

Rocket.Touched:connect(OnTouched)